If I have only one day then what should i have to do?
Dear Sandeep,
You need to be determined and self motivated.
Don't take much stress.
You can make a quick revision for all the topics which are extremely important for your exam.
Revise all the formulas as well. You can take help of your notes if you have prepare them.
Good Luck!!
And if there's a topic you haven't studied and you want to, don't hold back. Do it. This contrary to popular belief, but what it'll do is it will help calm you down. The only catch is, the topic must be a small one.